Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duc tinh cao snippets" » "duc thinh cao snippets", "duc minh cao snippets", "dac tinh cao snippets", "duc tinh lao snippets", "duc tinh chat snippets", "duc tinh cach snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("duc tinh cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("duc tinh cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duc tinh cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duc tinh cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.